Command-line tool for validating, linting, and formatting Agent Formation files.

⚠️ Coming soon — This repo is a placeholder.

Schema validation — is it valid AFS?

afs validate formation.afs
afs validate agents/*.afs --schema agent
afs validate .  # Validate entire formation directory

Checks:

• Required fields present
• Correct types
• Valid secret references
• Valid component references
• Schema version compatibility

Best practices — is it good AFS?

afs lint formation.afs
afs lint . --fix  # Auto-fix where possible

Checks:

• Descriptive IDs (not agent1, mcp-server-2)
• No unused secret references
• No deprecated fields
• Consistent naming conventions
• Missing descriptions
• Overly permissive defaults

Auto-format for consistency:

afs fmt formation.afs
afs fmt . --check  # Check without modifying (for CI)

brew install agent-formation/tap/afs

go install github.com/agent-formation/afs-cli/cmd/afs@latest

Download from Releases for:

• Linux (amd64, arm64)
• macOS (amd64, arm64)
• Windows (amd64)

# Validate a single file
afs validate formation.afs

# Validate with specific schema type
afs validate agents/support.afs --schema agent

# Lint entire directory
afs lint .

# Format in place
afs fmt .

# Check formatting (CI mode)
afs fmt . --check

# Output as JSON (for integrations)
afs validate . --output json

- name: Validate AFS
  run: |
    afs validate .
    afs lint .
    afs fmt . --check

afs-cli/
├── cmd/afs/           # CLI entrypoint
├── pkg/
│   ├── parser/        # AFS/YAML file parsing
│   ├── validator/     # Schema validation engine
│   ├── linter/        # Lint rule engine
│   ├── formatter/     # Auto-formatter
│   └── schema/        # Embedded JSON schemas
├── rules/             # Lint rule definitions
└── testdata/          # Fixtures for testing

For external tooling, JSON Schema files are available:

afs schema export --output ./schemas/

Or download directly from releases.

See CONTRIBUTING.md.

Apache License 2.0